Boat propelling unit



FIG. 1 is a side elevational view of a boat propelling unit showing mynew design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof; and

FIG. 4 is an end elevational view thereof.

The motor is shown in broken lines in FIGS. 1, 2, and 4, forillustrative purposes only.

The ornamental design for a boat propelling unit, substantially as shownand described.